The Holy Trinity Monastery in Kalabaka, Greece is an Eastern Orthodox monastery, built in the 1400s as part of some 24 other monasteries. It is built on top of a rocky precipice, which is around 400 meters (1200ft) high.
Its very “exclusive” location made it an extremely secure place in the days before aviation. It was only reachable via rope ladders. The main problem however was that all food and water had to be transported up there. The Monastery reached some fame in the 1980s when it was featured in the 007 “For your eyes only” and is now a tourist attraction.
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